KostasVolos
ArboristSite Operative
Ok,here's the situation.
We have six brand new Stihl MS180 2-mix
chainsaws which we are
going to use while making a wildfire protection zone around
an olive oil extraction facility.
All of them have adjustable carburetors fitted,MM and
their ( oval shaped )intake inserts are drilled open .
The crew consists of eight persons.And every each one of us
has it's own theory about tuning the carburetors firstly with a tach
and then maybe trim a bit with ear.
So ,-what a fantastic idea indeed!-I'm asking for some help from the crowd.
The MS180 has an official idle value of 2800 rpm.Max power at
10,000 rpm and max rpm is 14,000.
In the manual it is stated that it can be fitted with 12",14" & 16" 3/8"lp 0.43 bar (narrow kerf )and chain combo ,
as also with 3/8"lp 0.50 (standard kerf) of the same lengths.
So first series of questions :
This 14,000 max rpm figure applies with bar and chain on ?
If yes which of the
aforementioned six combos ?
Based on what documentation ?
Adjusting max rpm ( H ) without
bar and chain ( is this not the real " no load " situation ,after all ? ) is
out of question ?
My own personal take on the matter is to just turn in the H until
the value on the tach still oscillates ( visual indication of "four stroking ") while getting close to 13,500 rpm or so,
but not as high as 14,000 rpm.
All done with the bar and chain combo that the chainsaw is going
to be used with.
But there are voices in the crew that insist at the "only " and "real"
no load situation ,this being without bar and chain .
Meaning to tune the chainsaw without 'em .
Sounds logical ,since "we are talking about a small engine and not a chainsaw.The same engine could power other tools and machinery .
Which then would have been the no load situation ,at each case ? "
I'm confused by now ...
We have six brand new Stihl MS180 2-mix
chainsaws which we are
going to use while making a wildfire protection zone around
an olive oil extraction facility.
All of them have adjustable carburetors fitted,MM and
their ( oval shaped )intake inserts are drilled open .
The crew consists of eight persons.And every each one of us
has it's own theory about tuning the carburetors firstly with a tach
and then maybe trim a bit with ear.
So ,-what a fantastic idea indeed!-I'm asking for some help from the crowd.
The MS180 has an official idle value of 2800 rpm.Max power at
10,000 rpm and max rpm is 14,000.
In the manual it is stated that it can be fitted with 12",14" & 16" 3/8"lp 0.43 bar (narrow kerf )and chain combo ,
as also with 3/8"lp 0.50 (standard kerf) of the same lengths.
So first series of questions :
This 14,000 max rpm figure applies with bar and chain on ?
If yes which of the
aforementioned six combos ?
Based on what documentation ?
Adjusting max rpm ( H ) without
bar and chain ( is this not the real " no load " situation ,after all ? ) is
out of question ?
My own personal take on the matter is to just turn in the H until
the value on the tach still oscillates ( visual indication of "four stroking ") while getting close to 13,500 rpm or so,
but not as high as 14,000 rpm.
All done with the bar and chain combo that the chainsaw is going
to be used with.
But there are voices in the crew that insist at the "only " and "real"
no load situation ,this being without bar and chain .
Meaning to tune the chainsaw without 'em .
Sounds logical ,since "we are talking about a small engine and not a chainsaw.The same engine could power other tools and machinery .
Which then would have been the no load situation ,at each case ? "
I'm confused by now ...